Structural-building floor



V v 1,627,000 May 1927' R. v. YEAGER STRUCTURAL BUILDING FLOOR Filed March 8. 192a wii ZW M W Patented May 3, 1927.

PATENT OFFICE.

ROY V. YEAGER, OF DES MOINES, IOWA STRUCTURAL-BUILDING FLOOR.

Application filed March 8, 1926. Serial No. 93,148.

My invention relates to that class of buildings known as reinforced structural steel buildings, and in which the structural steel is embedded in fire' n-oofing material.

My object is to provide an improved structure for forming the floors and ceilings of such a building, whereby the completed structure may be finished in much less time than has been necessary heretofore, and all of the expense, annoyance and dclays caused by the use of centering timbers may be avoided, and whereby the resultant structure will have a neatly finished and ornamental appearance, and the floor beams and floor body will be thoroughly rcinforced and substantially monolithic in construction and capable of withstanding all of the strains to which .it is subjected and at the same time be thoroughly fireproof.

A further object is to provide improved means of simple, durable and inexpensive construction for pro-casting a portion of the fireproofing material for the beams. and utilizing said pre-cast fireproof material 'as a shoulder for supporting sheet rock or the like to form the under surface of the floor body, and whereby these pro-cast portions of thebeams and the sheet rock form of themselves'a complete surface or support for the plastic material of. which the floor proper is constructed. I

My invention consists in the arrangement and combination of the various steps by which my improved method is carried out. and in the construction,"arrangement ,and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claim, and illustrated in the accompanying drawings, in which:

Figure 1 shows a side elevation of a portion of a structural beam withreint'orcing wires thereon and a pro-cast body formed upon and completely enclosing the lower portion thereof, a part of said prc-cast body being broken away to show the reinforcing material and the ends of said beams being supported upon structural steel building frame members.

Figure 2 shows a transverse sectional view through a structural beam having a procast fireproofing body formed thereon, and having reinforcing wires extended over the structural beam and projected into the pre cast fireproof body, one end of the beam being supported upon a portion of astructural building frame member.

Figure 2} shows a similar view of two adjacent structural beam members with precast fireproof bodies thereon, and sheets of pro-cast fireproofing material supported upon the projecting shoulders-of the precast fireproof body portions, and with reinforcing rods laid on the upper ends of the beams above said sheets in position ready to receive the plastic material for forming the floor; and I Figure 4 shows a similar view somewhat enlarged with the floor completed.

Referring to the accompanying drawings, I shall first describe the specific structure of the structural beam. The numeral 10 indicates two parallel rods forming the top of the beam and spaced apart. The numeral 11 indicates two parallel rodsspaced apart and forming the bottom of the beam, and 12 indicates a series of diagonally arranged rods extended between the rods 10 and the rods 11 and permanently connected therewith preferably by electric welding thus forming a rigid beam structure. This beam, as shown in Figural, is designed to rest upon and be supported by the structural steel frame members 13 at both ends. In a completed building structure these beams 13 are covered by fireproofing material in the ordinary way.

These structural floor beams are, before being placed in position, set into a suitable mould with the tops thereof projecting above the mould, and then thereis pouredinto the mould a plastic material to form the fireproofing body 14, which completely'encloses thelower part of the beam, and which is provided at its top with two laterally projecting shoulders at 15, the top edges 0 which project outwardly beyond the beam structure and may be conveniently-trowled ofi while in the mould, so that these shoulders 15 on a series of beams formed in the same mould will all be of a uniform distance from the top of the beam. I preferably form thebody portion 14 of a plastic composition includmg gypsum, and of such nature that it will firmly set in a comparatively few minutes firmly enough to be handled and placed in position within the building structure. By

this arrangement it is obvious that a com-.

paratively large number of these beams may have the body portions 14 cast thereon of uniform 8128 in a single mould, and in a short s ace of time. Hence, there is no appreciab ie delay in the building structure due to the pie-casting of these body portions 14.

After two adjacent beams, having the precast body portion 14 thereon, have been properly placed in position within the building structure, then the operators place sheets 16 of rigid material, preferably fireprooling material, with the ends thereof resting upon two of the adjacent shoulders 15 and spannin" the space between said shoulders. I prei erably employ for thispurpose a composition including gypsum, and known as sheet rock, now in common use in building structures. After. the beams andsheets have been placed in position under a floor, or a certain portion thereof, the operator places the reinforcing rods 1'? in position resting upon the tops of the beams, and preferably curved downwardly between the beams, and after this has been done the building is ready to receive the floor proper, indicated by the numeral 18', which may be of any ordinary floor forming material, such for instanceas plastic gypsum or concrete.

.When the beams have been placed in the moulds for receiving the body portions 14, I provide a number of reinforcing rods 19 which are placed with their central portions resting on top of the beam and their end portions-projecting downwardly therefrom. Those near the ends of the beam are preterably made longer than those near the center, as shown in Figure 1, and when the body portion 14 is case or moulded on the beams, these reinforcing rods 19 serve to strengthen and reinforce the body portion 14, and when the floor 18 is case or poured, these rods 19 serve to thoroughly unite'the body portions 18 and it through these reinforciiig rods,

By pre-easting the body portions 14 before the beams are placed in position, and then resting the sheets 16 thereon, the-floor may be poured or cast without any necessity of providing for any part of this structure any centering timbers of the kind now ordinarily employed in torming the floors of reinforced fireproof structural building's.

Furthermore, by the use of a material such as sheet rock a bond or union is obtained between it and the floor body 18 of such nature as to permanently secure the sheet rock to the floor body 18.

In the construction of buildings with my llllPIOVClllOllt, a very substantial saving is effected, lirst became no sheet metal forms need be employed into which the plastic material for forming the floor is poured, and second because there is no need for centering timbers, and in addition thereto when a material like gypsum is employed a great saving is effected. because such material sets within a comparatively few minutes and the beams may be cast into the body portions 18 and then set in position in the buiidingalmost as rapidly as the beams could be set without the pro-cast body portions 14.

.1 claim as my invention An improved structural building lloor con'iprising two fixed supports spaced apart, a series of beams extendcdbetween and resting upon said supports and spaced apart from each other. eachbeam comprising a self-contained metal body portion with its ends projected outwardly and designed to rest upon said supports and to thereby sup port the bodies of the beams between said supports, each beam being also formed with a precast plastic body-portion covering the bottom portion of the beam and extended upwardly to a point spaced apart from the top of the beam to form outwardly projected shoulders beyond the metal portions of the beam, floor sheets of rigid material placed on said shoulders between the beams, and a plastic, floor body formed on top of the beams and rigid sheets and completely enclosing the upper portions of the metal beams, for the purposes stated.

Des Moines, Iowa, February 24, 1926.

V. YEAGER. 

